Q: Is 421,700 a Prime Number?
A: No, 421,700 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 421700 can be evenly divided by 1 2 4 5 10 20 25 50 100 4,217 8,434 16,868 21,085 42,170 84,340 105,425 210,850 and 421,700, with no remainder.
Since 421,700 cannot be divided by just 1 and 421,700, it is not a prime number.